code: def setup_data(self, input_path):
      print("loading: " + input_path)
  
      new_episode = True
  
      # function to parse the episodes
      def extract_qa(qa_data):
          line_data = qa_data.split("\t")
          question_type, anon_question, deanon, context = line_data[:4]
          answer = line_data[4:]
          if answer == []:
              answer = ["No answer"]
          return (
              context + "\n" + anon_question.replace("XXX", deanon),
              answer,
          )
  
      # parse and output the episodes
      for fname in os.listdir(input_path):
          if fname.startswith(self.dt):
              with PathManager.open(
                  os.path.join(input_path, fname)
              ) as file:
                  file_data = file.read().split("\n")[:-1]
              for line in file_data:
                  question, answer = extract_qa(line)
  
                  yield (question, answer, None, None), new_episode
  
file_path: ParlAI/parlai/tasks/qazre/agents.py
imports: from parlai.core.teachers import DialogTeacher
  from parlai.utils.io import PathManager
  from .build import build
  import os
label_desc: Use image node_id 2 for calling the QAZRETeacher obj's underlying member method code with example usage: obj.setup_data(input_path) and returns: unknown,  answer